Some breeders have specific litters and the names have to be relevant to the litter such as a "K" litter would have all registered names with "K" in it. My Rotties' Registered name is "Kennel Name" Rocket Man, his litter all had names that were song titles, I let the breeder pick his name, I liked it, but his call name is Baron. Just a thought, some breeders are funny like that and like to pick the registered name, my AKC paper came with his name printed on it before I registered him as did all his paperwork.